Cita APA (7a ed.)

Watcyn-Jones, P. (1997). Pair work 1: Elementary to pre-intermediate ([New ed.].). Penguin Books.

Cita Chicago Style (17a ed.)

Watcyn-Jones, Peter. Pair Work 1: Elementary to Pre-intermediate. [New ed.]. London: Penguin Books, 1997.

Cita MLA (9a ed.)

Watcyn-Jones, Peter. Pair Work 1: Elementary to Pre-intermediate. [New ed.]. Penguin Books, 1997.